# Jacquardi4

> MIDI Envelope Generator

Canonical page: [https://chrome-stats.com/d/id6786135940](https://chrome-stats.com/d/id6786135940)

## Overview

- **ID:** `id6786135940`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Satoshi Kajii
- **Category:** Music
- **Version:** 1.0.3
- **Last updated:** 2026-08-03
- **First published:** 2026-07-06
- **Size:** 12 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/jacquardi4/id6786135940)
- **Privacy policy:** [https://skajii.blogspot.com/2024/11/privacy-policy.html](https://skajii.blogspot.com/2024/11/privacy-policy.html)

## Description

Concept:
“Jacquardi4” is an AUv3 instrument that does not make any sounds but can send out 4 analog-like “Envelope” signals via MIDI control changes (MIDI CC). That is, the app contains 4 MIDI modules of envelope generator. The user can use them for modulating any parameter of 3rd-party’s plugins that can be assigned to MIDI CC , for example, cutoff frequency.  

System Requirements:
AUv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix, LoopyPro, etc).

Usage:
Just assign MIDI keyboard to Jacquardi4's MIDI IN (it needs to trigger Jacquardi4) and assign Jacquardi4's MIDI OUT to 3rd party's plugins.

Explanation of sliders:

Channel: determines MIDI channel.
Control Rate: determines the resolution of MIDI processing. Higher value, higher resolution.
Active: turn on or off the module. Useful when using MIDI learn functionality of 3rd party plugin.
MIDI CC: determines MIDI control number. (text-editable)
Amp: determines amplitude in dB
Offset: determines an initial value.
Attack: attack value.
Decay Time: decay time value.
Decay Curve: decay curve value.
Sustain: sustain value.
Release: release value.

Explanation of Preset File System:

At first make a new bank folder, in which you can save a preset file. And push "Save As" button.
Also the user can export or import preset files.

## Rankings

- #2,051,921 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6786135940)